SPRINGFIELD (AP) - Republican U.S. Sen. Scott Brown and his Democratic challenger Elizabeth Warren are set to square off for their third debate in Massachusetts' U.S. Senate race.
The debate is the only one in the western part of the state, taking place Wednesday night at Springfield Symphony Hall.
Earlier Wednesday, Brown released a new television ad meant to appeal to voters in the greater Springfield area.
In the 30-second ad, Brown talks about the four tornadoes that touched down in central and western Massachusetts last year killing three and destroying or damaging 1,400 houses. Brown says he loves the spirit of the people who live in that part of the state.
The debate comes amid the candidates' wrangling over each other's work histories as lawyers.
On Tuesday, Brown refused to release a full list of clients, despite earlier assurances from the candidate that he would make the list public.
Brown's campaign said they're withholding the information from the public until Warren releases her full client list.
Warren's campaign has released a list of more than a dozen cases she helped argue before the federal court system going as far back as 1995, but has not released a full list of other cases she has consulted on.
Warren's legal work since 2008, when she was tapped to head a Congressional oversight panel, has also been made public.
Brown has said he worked as a title agent for Fidelity National and First American and worked with smaller mortgage companies and banks. He said he worked on real estate closings, but has never done any foreclosures or any subprime mortgages.
Warren's campaign said that without a full list from Brown, voters can't know if there have been any conflicts of interest between Brown's private legal work and his public legislative work.
As the campaign heads into its final weeks, outside groups are hoping to affect the outcome.
The groups say they're respecting a pledge signed by Brown and Warren, aimed at barring third-party organizations from buying television, radio and Internet ads by instead focusing on door to door contact with voters and mailings sent to voters' homes.
Polls show the race, already the most expensive in state history, remains tight.